 Mon May 20 14:02:03 2024, Jelena, Oliver, Shahab, DAQ, Retune 245 MHz
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| Mew numbers for 245 MHz plunger is 190 (both) |
Tue Apr 16 15:35:07 2024, Jan, Collaboration, G-PAC Proposal 
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Sat May 18 13:13:45 2024, Yuri, Taka, Xinliang, Sophia, Yuanming, Ragan, Shahab , Calibration, Shorter shots with 98 Mo
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now making shorter shots with 98-Mo
3 seconds each
50 MSPS
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Sun May 12 18:34:54 2024, Ruijiu, Analysis, How to use queqiao to transfer tiq data
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If the ssh to lxir131 was disconnected, you can connect to lxir131 and restart queqiao program to transfer tiq data from NAS to luster.
1. Open a terminal on any GSI linux computer, like the one in the Measurement Room:
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Wed May 15 11:45:22 2024, David, Analysis, Lustre Trouble
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Since around 11:30, Lustre is down, therefore in https://sparc-daq-02.gsi.de/, the spectrograms are not being updated. Expected time to recovery > 2 hours.
The data will still be stored on the local hardisk. Whenever Lustre is online, we start file transfer and analysis.
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Wed May 15 23:04:32 2024, Xinliang, Analysis, Electron cooler data
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| The cooler curve measured during May 14 afternoon. |
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Fri May 17 19:43:03 2024, Jelena B, Zsolt P., Shahab, David, Analysis, + Beam issues
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Important - analysis
-> we are trying to get PID with a new setting to see if 98Zr decays with 30s half-life
--> we are taking 1 min cycles
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Tue May 14 23:22:55 2024, Helmut Weick, Accelerator, isochronicity curves
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Sergey started with a setting with quadrupoles already changed like in 2021.
Ths was used for the first isochronicity curves.
It also gave soem, however, not good peak shapes with scrapers closed.
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Tue May 14 23:40:03 2024, Helmut, Sergey, Yury, Accelerator, paper log book
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two pages of log book on paper for teh first setup,
injection into ESR and tuning primary beam 100Mo and fragment 98Mo. |
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Wed May 15 19:20:32 2024, Helmut Weick, Accelerator, scraper setting
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After the orbit correction on the target straight section the scrapers work better.
One pair of scrapers works best:
GEEXDS2HA (outside straight section = low Brho side) = -4.0 mm
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Wed May 15 19:45:44 2024, Helmut Weick, Accelerator, Cooler curves after beam shift
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After the Beam position tuning but before the scraper tuning two more cooler curves were taken.
The first with all scrapers open shows a similar shape to before with the same quadrupole setting.
Afterwards the ESR ebergy was shifted by -0.8 MeV/u to get the beam more on an outer orbit.
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Wed May 15 20:17:20 2024, Jeroen, Accelerator, Fewer spills from SIS18 then lost beam
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Apparently fewer spills coming from SIS18, see attached.
Beam was lost at 20:17:52. |
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Thu May 16 11:20:10 2024, Sergey, Accelerator, Screenshot of ESR pattern with 140 repetitions (each is 100 ms)
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Injection Beam Process: 100ms
Bunching Beam Process: 16ms
Intermediate Beam Process: 100 ms, which is repeated 140 times
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Thu May 16 12:48:58 2024, Sergey, Accelerator, Tune to 98Zr
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- stop longer measurements
- change quadrupole and sextupole magnets
- rescale SIS-TE-ESR |
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Thu May 16 15:24:30 2024, Ide, Hubbard, Accelerator, new Plunger setting
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plunger motors were set
to +/-390 mm for 245 MHz resonator
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Thu May 16 16:43:29 2024, Yuri, Accelerator, HHT
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| HHT sees radiation from us. We stop for 10 min for them to see the speed with which the radiation level decreases. |
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Fri May 17 17:03:39 2024, Helmut, Yury, Accelerator, approx. 96Sr setting
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Only 96Sr would yield very few line with only ions from tiem to time.
So we went a bit lower in Brho 7.69 Tm -> 7.65 Tm.
The setting is calculated as a 98Mo39+.
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Fri May 17 17:09:26 2024, Helmut, Yury, Accelerator, approx. 96Sr setting (98Zr39+)
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Only 96Sr would yield very few line with only ions from time to time.
So we went a bit lower in Brho 7.69 Tm -> 7.65 Tm.
The setting is calculated as a 98Mo39+.
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Fri May 17 21:56:58 2024, Jelena B, Zsolt P., Accelerator, Optimizing setting
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We are optimizing setting for 96Sr
start time: 21:52 |
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Fri May 17 22:06:05 2024, Jelena B, Zsolt P., Accelerator, ESR
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| ESR is down |